Pretty Vampires
Bunny Foo Foo
I wouldn't have minded a way to gamble money, since you end up with heaps of it. Stuff like Oblivion had betting on the arena, maybe there could of been an underground arena. I know there is a bandit cave that has an arena type pit. That could of been cool if it was used, like you could fight in it or bet on it.
Ability to take over houses of people who have died or abandoned houses. If shop keepers die, you can buy their store from the Jarl and some NPC comes up to you asking if they can run it or something, that way you can still buy and sell, maybe earn money off it. I would of liked to have been able to take over other houses, like Mercer's manor, Arentino residence, Riften warehouse etc. It irritates me that unoccupied places look better than the house I paid for.
You should be a writer for Bethesda. Interesting ideas.
I'd love it if disguises actually worked, or you could poison food in the market stalls. Haha.